illabor

Etymology
From.

Verb

 * 1) to fall, slip, slide, glide, or flow into
 * 2) to fall down, sink down
 * 3) to collapse, tumble to ruins
 * 4) to sink down dying
 * 5) to penetrate
 * 6) to enter into one’s mind

Conjugation
This verb takes the future passive participle instead of *illābendus.